Emeraude v2.60 – Doc v2.60.01 - © KAPPA 1988-2010
Guided Interpretation #10 B10 - 6/12
Fig. B10.9 • First temperature match solution (segmented model)
The model we are using here is the segmented model. This model divides the well into segments
in front and between inflows, and applies a specific equation to them. Each segment is solved in
isolation, starting from a point of the actual temperature curve. We see in this particular case that
on the bottom inflow, the data exhibit cooling usually referred to as ‘Joule-Thomson’ (JT) cooling,
and the model does not replicate this trend as the entering fluid is considered to arrive at
geothermal. The temperature change within the layer is in part affected by the JT effect and in
part by other effects such as convection and conduction. In the Emeraude segmented model – as
in other models used in the industry – we take a shortcut saying that any temperature difference
between the fluid entry temperature and the geothermal corresponds to a JT effect linked to
‘some’ pressure drop: dT = KJT x dP where KJT is the JT coefficient.
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Select Information, move to the Temperature tab; the current ‘dP (Joule-Thomson)’ value is 0.
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Experiment by changing this value starting with 10 psia, then 30, 50, etc. Click ‘Apply’ to see
the temperature updated.
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Go for 55 psia and you should have a reasonable match on the bottom zone. Click OK.
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Go back to ‘Inflow Rates’.
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Tick ‘Match surface conditions’.
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Select ‘Global Improve’; the final match is obtained.